主成分分析法在煤层气选区评价中的应用

发布时间：2018-01-11 07:13

本文关键词：主成分分析法在煤层气选区评价中的应用　出处：《煤炭科学技术》2016年08期 　论文类型：期刊论文

【摘要】：为了对黔西-滇东地区煤层气有利区块进行优选,以6个主要区块为研究对象,选取资源丰度、含气饱和度、平均含气量、含气面积、煤层总厚度、Ro,max、平均渗透率、兰氏体积、视储层压力和地应力10个评价指标,采用主成分分析法,在众多指标中提取3个主成分,分别为煤储层物性因素、煤储层能量因素、煤层气资源因素,依据主成分得分加权求和获得各区块的综合得分。研究表明:织纳矿区的煤储层物性条件较好,盘县矿区的资源条件和煤储层能量条件较好,属于煤层气开发的最优区块;水城矿区和六枝矿区的资源条件和煤储层能量条件较好,属于煤层气开发的较优区块;老厂矿区和恩洪矿区总体上也受煤储层能量因素和资源因素控制,但煤储层物性条件较差,符合"小而肥"的特点,是煤层气开发的一般区块。
[Abstract]:In order to Qianxi - East Yunnan coalbed gas block were optimized by 6 main block as the research object, select the resource abundance, gas saturation, average gas content, gas bearing area, the total thickness of coal seam, Ro, Max, average permeability, Langmuir volume, as the reservoir pressure and stress 10 evaluation indicators by using the method of principal component analysis, 3 principal components were extracted in many indexes, respectively. The physical properties of coal reservoirs, coal reservoir energy factors, CBM resources factors, according to the comprehensive score of principal component score weighted sum of each block. The study shows that the condition of Zhina of coal reservoir is better, the resources condition and coal reservoir energy conditions in Panxian mining area is good, the optimal block belongs to the development of coalbed gas resources; coal reservoir conditions and energy conditions and six branches in Shuicheng mining area better, better block belongs to the development of coalbed gas; LAOCHANG mining area and Enhong mining area In general, it is also controlled by energy factors and resource factors of coal reservoirs, but the physical properties of coal reservoirs are poor, which is consistent with the characteristics of "small and fat", and is a general block of coalbed methane development.

【作者单位】：中国矿业大学煤层气资源与成藏过程教育部重点实验室;中国矿业大学资源与地球科学学院;
【基金】：国家科技重大专项资助项目(2016ZX05044001) 国家自然科学基金资助项目(41272178,41572140)
【分类号】：TD84
【正文快照】： 0引言黔西-滇东地区煤层气资源丰富,分布较集中且产出条件良好,具有巨大的开发潜力[1],是我国为数不多的大型富气带之一。同时,黔西-滇东地区构造条件复杂[2],不同含气区块的煤储层物性条件、煤储层能量条件和煤层气资源条件存在差异,在进行选区工作时难度很大。因此,选择合适

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